Pretreatment liquid for inkjet textile printing, method for producing printed textile item, and ink set for inkjet textile printing

Abstract

A pretreatment liquid for inkjet textile printing is disclosed that includes water and a cellulose-based polymer having a weight average molecular weight of at least 50,000. A method for producing a printed textile item and an ink set for inkjet textile printing are also disclosed.

What is claimed is: 
     
       1. A pretreatment liquid for inkjet textile printing, the pretreatment liquid comprising water, a cellulose-based polymer having a weight average molecular weight of at least 50,000, and a water-dispersible resin. 
     
     
       2. The pretreatment liquid for inkjet textile printing according to  claim 1 , wherein when an amount (% by mass) of the cellulose-based polymer relative to a total mass of the pretreatment liquid for inkjet textile printing is termed A, and an amount (% by mass) of the water-dispersible resin relative to a total mass of the pretreatment liquid for inkjet textile printing is termed B, formula (1) and formula (2) shown below are both satisfied
   2.0< A+B< 15.0  Formula (1)
 
   0.5< B/A< 15.0.  Formula (2)
 
 
     
     
       3. The pretreatment liquid for inkjet textile printing according to  claim 1 , wherein the water-dispersible resin comprises a cationic water-dispersible resin. 
     
     
       4. The pretreatment liquid for inkjet textile printing according to  claim 1 , wherein the water-dispersible resin comprises a cationic water-dispersible urethane resin. 
     
     
       5. The pretreatment liquid for inkjet textile printing according to  claim 1 , wherein the cellulose-based polymer comprises at least one polymer selected from the group consisting of hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and methyl cellulose. 
     
     
       6. The pretreatment liquid for inkjet textile printing according to  claim 1 , which is for use on a fabric comprising cellulose fibers. 
     
     
       7. A method for producing a printed textile item, the method comprising:
 applying a pretreatment liquid for inkjet textile printing comprising water and a cellulose-based polymer having a weight average molecular weight of at least 50,000, to a fabric comprising cellulose fibers, and 
 forming an image using an ink for inkjet textile printing comprising a pigment and water, using an inkjet recording method, on the fabric to which the pretreatment liquid for inkjet textile printing has been applied. 
 
     
     
       8. The method for producing a printed textile item according to  claim 7 , wherein the pretreatment liquid for inkjet textile printing further comprising a water-dispersible resin. 
     
     
       9. The method for producing a printed textile item according to  claim 8 , wherein when an amount (% by mass) of the cellulose-based polymer relative to a total mass of the pretreatment liquid for inkjet textile printing is termed A, and an amount (% by mass) of the water-dispersible resin relative to a total mass of the pretreatment liquid for inkjet textile printing is termed B, formula (1) and formula (2) shown below are both satisfied
   2.0< A+B< 15.0  Formula (1)
 
   0.5< B/A< 15.0.  Formula (2)
 
 
     
     
       10. The method for producing a printed textile item according to  claim 8 , wherein the water-dispersible resin comprises a cationic water-dispersible resin. 
     
     
       11. The method for producing a printed textile item according to  claim 8 , wherein the water-dispersible resin comprises a cationic water-dispersible urethane resin. 
     
     
       12. The method for producing a printed textile item according to  claim 7 , wherein the cellulose-based polymer comprises at least one polymer selected from the group consisting of hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and methyl cellulose. 
     
     
       13. An ink set for inkjet textile printing, the ink set comprising:
 a pretreatment liquid for inkjet textile printing comprising water and a cellulose-based polymer having a weight average molecular weight of at least 50,000, and 
 an ink for inkjet textile printing comprising a pigment and water. 
 
     
     
       14. The ink set for inkjet textile printing according to  claim 13 , wherein the pretreatment liquid for inkjet textile printing further comprising a water-dispersible resin. 
     
     
       15. The ink set for inkjet textile printing according to  claim 14 , wherein when an amount (% by mass) of the cellulose-based polymer relative to a total mass of the pretreatment liquid for inkjet textile printing is termed A, and an amount (% by mass) of the water-dispersible resin relative to a total mass of the pretreatment liquid for inkjet textile printing is termed B, formula (1) and formula (2) shown below are both satisfied
   2.0< A+B< 15.0  Formula (1)
 
   0.5< B/A< 15.0.  Formula (2)
 
 
     
     
       16. The ink set for inkjet textile printing according to  claim 14 , wherein the water-dispersible resin comprises a cationic water-dispersible resin. 
     
     
       17. The ink set for inkjet textile printing according to  claim 14 , wherein the water-dispersible resin comprises a cationic water-dispersible urethane resin. 
     
     
       18. The ink set for inkjet textile printing according to  claim 13 , wherein the cellulose-based polymer comprises at least one polymer selected from the group consisting of hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and methyl cellulose. 
     
     
       19. The ink set for inkjet textile printing according to  claim 13 , which is for use on a fabric comprising cellulose fibers. 
     
     
       20. The pretreatment liquid for inkjet textile printing according to  claim 1 , wherein the water-dispersible resin comprises at least one selected from the group consisting of a water-dispersible urethane resin, a water-dispersible acrylic resin, a water-dispersible vinyl acetate resin, a water-dispersible styrene-(meth)acrylic resin, a water-dispersible vinyl chloride resin, and a water-dispersible polyamide resin.